Doepfer A-140 ADSR Envelope Generator

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80,00 €
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in stock, immediately available

  • Model:
    [A-140]
  • Weight: 0.2kg
  • Manufacturer: Doepfer



Module A-140 is an envelope generator, and, since it puts out control voltages, counts as one of the modulation devices in a modular system. 

As soon as the gate input receives sufficient voltage, the ADSR generates a variable voltage, changing in time, called an envelope. 

This varying voltage is output in normal (positive) and inverted form, and can be used, eg., for voltage controlled modulation of a VCO, VCF, or VCA, or for processing other modules' inputs and outputs. 

The shape of the envelope is governed by four parameters: Attack, Decay, Sustain and Release. 

The envelope is started (triggered) by a gate signal either from the INT.GATE voltage on the system bus, or, if a signal is put into it, from the gate input socket. 

The envelope can also be re-triggered, ie. start from scratch again, each time a trigger signal is sensed at the Retrig. input socket, when the gate is still open. 

Module A-140 has available a three-position toggle switch to select one of three time ranges. The envelope duration ranges from about 50us (microseconds) up to several minutes. 

In combination with the Comparator module A-167 a free-running "ADSR-LFO" can be realized.

technical details

Width: 8HP 

Connections: 
Gate input 
Retrigger input 
Output 2x 
Output (inverse)


Additional Images


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